4pcs Math Roller Stamps compatible with Arithmetic Addition & Subtraction Practice

4pcs Math Roller Stamp,addition And Subtraction Seal Arithmetic Artifact, Math Roller Stamp Features1. Digital Teaching Stamp Roller: Adjustable numbers, gently rolling, can efficiently and quickly print out math practice questions within 100, it is a fun and meaningful gift compatible with your children and friends&39; children2. Improve the Efficiency of Learning: You can quickly prepare math problems compatible with your kids at home, just roll the stamp, you can quickly print math problems, and it dries quickly, convenient and practical. Arrangement needs to be changed every 10 math problems to avoid duplication.3. Quick Addition and Subtraction: You can quickly prepare math problems compatible with your kids at home, just roll the stamp, you can quickly print math problems, and it dries quickly, convenient and practical.Arrangement needs to be changed every 10 math problems to avoid duplication.4. Reusable: Small and exquisite, easy to carry, and can be reused after adding ink. The imprint is clear, the color does not fade after drying, and it is not easy to smudge.5. Learning and Education Gift: This is a great gift, when children need to practice math problems, parents can quickly prepare them compatible with them, and children can also prepare compatible with each other and learn together.SpecificationMaterial: PlasticColor: Pink, BlueSize: 10 x 10 x 5 cmWeight: 320 gPackage Include:4x Math Roller Stamp